Securitas, a market leader in security, with over 280,000 employees, operating in 45 countries. The company offers a wide range of customers in a variety of industries and segments with services like guarding, mobile and monitoring, keyholding & alarm response (both commercial and domestic), mobile patrols, a locks and unlocks service for commercial premises and lone worker protection/escort services.

Senator Security Services Ltd: Established 1997; a leading provider of integrated security for the Facilities Management sector. Manned guarding, key holding, alarm response, mobile patrols, front-of-house, CCTV remote monitoring and car park management for shopping centres, void and occupied property, business premises and NHS / healthcare facilities.

Sitensys can provide you with a full security solution for the surveillance and protection of personnel and property. We offer fully integrated electronic systems and manned guarding solutions. At the heart of Sitensys Security is our on site guarding services.Sitensys specialises in manned guarding utilising fully integrated electronic security solutions, closed circuit television surveillance (CCTV) and access control systems.

Smart Integrated Solutions Ltd provide dynamic support and design / installation for Security / Integrated Facilities Solutions, with substantial experience in a variety of vertical markets and sectors. Further services include consultancy and TFM innovation for Facilities Management Companies. These solutions include CCTV, ANPR, Access Control, Security Systems and Integrated software platforms, to provide centralisation to clients of systems

Sovereign-SIS was estalished in 2009 bringing together leading operatives in the field of security, intelligence and investigations, in order to provide a truly comprehensive professionl service to meet the needs of customers.

SWL Security Services is a security service provider with extensive experience of working with home office and the police on various assignments. The company offers manned guarding, retail security, CCTV installation and monitoring services. SWL also offer alarm response and key holding services for businesses.

Premier Keyholding are dedicated keyholding and alarm response specialists based in London, operating to BS7984 Keyholding standards and ACPO guidelines. Beyond keyholding and alarm response, Premier Keyholding's services include: mobile patrols, locks & unlocks, static guarding, emergency repair work in the event of break-in or damage, lone worker security & security procedures training for staff.

Watford Keyholding is a dedicated Keyholding, alarm response and mobile patrols company operating exclusively in the Watford area. Watford are available 24 hours a day, 365 days a year to make sure that premises are fully protected and that they can deal with any call immediately.

Triangle Security was established in 1981 to provide corporate security services to industry and commerce. Through the years, the company has grown and has acquired an enviable reputation for the quality of its services and personnel.

Umbrella Security Services offers a wide range of security solutions from close protection officers, rapid deployment CCTV, key holding/alarm response and much more. The company also provides a provision and installation service for CCTV, intruder alarms and access control systems. It provides a complete bespoke installations and maintenance service by highly skilled and qualified engineers.

WebWay is a global alarm transmission service provider who manage the secure delivery of alarms & events to monitoring centres. Its systems are designed to the latest standards and are proven in thousands of implementations. WebWay's new range of signalling products are more powerful, efficient and more feature packed than ever before with Ethernet, WIFI, 2G, 3G, 4G single dual and triple path solutions.